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你这个不用数据库真的是有点难搞
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我写了个用集合存储的，你看看，能否帮上你
java.util.ListString list = new ArrayListString();
list.add("qq=123");//存储的时候用（用户名=密码）的形式
list.add("ww=456");
String username = "qq";
String password = "123";
for (int i = 0; i list.size(); i++) {
String num = username +"="+password;
if(num.equals(list.get(i))){
System.out.println("登录成功");
break;
}
}
用java是可以写出qq的，只不过用java开发c/s的软件不是java特长的，你要是真的想写，就写着练练手吧，最起码可以巩固java se上的知识。
具体怎么写，给你个大概的思路吧，因为我没办法在这个有限的输入框内把所有的代码写完。
【1】先写出qq的简单界面
【2】给每个按钮添加监听
【3】按钮事件（方法）定义
【4】连接网络（socket）
【5】测试
【5】其他功能添加
【6】测试
用java做QQ登录界面的写法如下：
package ch10;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
1、//定义该类继承自JFrame，实现ActionListener接口
public class LoginTest extends JFrame implements ActionListener
{
2、//创建JPanel对象
private JPanel jp=new JPanel();
3、//创建3个标并加入数组
JLabel name = new JLabel("请输入用户名");
JLabel password = new JLabel("请输入密码");
JLabel show = new JLabel("");
private JLabel[] jl={name,password,show};
4、//创建登陆和重置按扭并加入数组
JButton login = new JButton("登陆");
JButton reset = new JButton("重置");
private JButton[] jb={login,reset};
5、//创建文本框以及密码框
private JTextField jName=new JTextField();
private JPasswordField jPassword =new JPasswordField();
public LoginTest()
{
6、//设置布局管理器为空布局，这里自己摆放按钮、标签和文本框
jp.setLayout(null);
for(int i=0;i2;i++)
{
7、//设置标签和按扭的位置与大小
jl[i].setBounds(30,20+40*i,180,20);
jb[i].setBounds(30+110*i,100,80,20);
8、//添加标签和按扭到JPanel容器中
jp.add(jl[i]);
jp.add(jb[i]);
//为2个按钮注册动作事件监听器
jb[i].addActionListener(this);
}
9、//设置文本框的位置和大小，注意满足美观并足够用户名的长度
jName.setBounds(130,15,100,20);
10、//添加文本框到JPanel容器中
jp.add(jName);
11、//为文本框注册动作事件监听器
jName.addActionListener(this);
12、//设置密码框的位置和大小，注意满足美观和足够密码的长度
jPassword.setBounds(130,60,100,20);
13、//添加密码框到JPanel容器中
jp.add(jPassword);
14、//设置密码框中的回显字符，这里设置美元符号
jPassword.setEchoChar('$');
15、//为密码框注册动作事件监听器
jPassword.addActionListener(this);
16、//设置用于显示登陆状态的标签大小位置，并将其添加进JPanel容器
jl[2].setBounds(10,180,270,20);
jp.add(jl[2]);
17、//添加JPanel容器到窗体中
this.add(jp);
18、//设置窗体的标题、位置、大小、可见性及关闭动作
this.setTitle("登陆窗口");
this.setBounds(200,200,270,250);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
19、//实现动作监听器接口中的方法actionPerformed
public void actionPerformed(ActionEvent e)
{
20、//如果事件源为文本框
if(e.getSource()==jName)
{
21、//切换输入焦点到密码框
jPassword.requestFocus();
}
22、//如果事件源为重置按扭
else if(e.getSource()==jb[1])
{
23、//清空姓名文本框、密码框和show标签中的所有信息
jl[2].setText("");
jName.setText("");
jPassword.setText("");
24、//让输入焦点回到文本框
jName.requestFocus();
}
25、//如果事件源为登陆按钮，则判断登录名和密码是否正确
else
{
26、//判断用户名和密码是否匹配
if(jName.getText().equals("lixiangguo")
String.valueOf(jPassword.getPassword()).equals("19801001"))
{
27、jl[2].setText("登陆成功，欢迎您的到来！");
}
else
{
28、jl[2].setText("对不起，您的用户名或密码错误！");
}
}
}
public static void main(String[] args)
{
29、//创建LoginTest窗体对象
new LoginTest();
}
}
太简单了！你看看！ package dyno.swing.beans.qq; import javax.swing.*; import javax.swing.event.MouseInputListener; import org.jvnet.substance.skin.SubstanceOfficeBlue2007LookAndFeel; /*import org.jvnet.substance.skin.SubstanceModerateLookAndFeel; import org.jvnet.substance.skin.SubstanceOfficeBlue2007LookAndFeel;*/ import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.io.IOException; import java.io.PrintWriter; import java点虐 .Socket; import java点虐 .UnknownHostException; import java.sql.ResultSet; import java.sql.SQLException; import java.util.Scanner; public class QQLogin extends JFrame implements MouseInputListener,ActionListener{ JLabel guanggao,beijing,wenzi,shezhi,zhanghaowb,qq1,dengluzhuangtai; // JTextField zhanghao; JPopupMenu haoma; JComboBox zhanghao; JPasswordField mima; JCheckBox jizhumima,zidongdenglu; JButton denglu,chashamuma; JProgressBar jpb; SimThread activity; Timer activityMonitor; String name,qq; Socket s; public QQLogin() { try { UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel"); } catch (ClassNotFoundException e1) { // TODO 自动生成 catch 块 e1.printStackTrace(); } catch (InstantiationException e1) { // TODO 自动生成 catch 块 e1.printStackTrace(); } catch (IllegalAccessException e1) { // TODO 自动生成 catch 块 e1.printStackTrace(); } catch (UnsupportedLookAndFeelException e1) { // TODO 自动生成 catch 块 e1.printStackTrace(); } chashamuma = new JButton("查杀木马"); chashamuma.setBounds(240, 155,85, 20); this.add(chashamuma); jpb = new JProgressBar(); jpb.setStringPainted(true); jpb.setBounds(100, 240, 200, 15); this.add(jpb); chashamuma.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ jpb.setMaximum(1000);//设置进度栏的最大值 activity=new SimThread(1000); activity.start();//启动线程 activityMonitor.start();//启动定时器 chashamuma.setEnabled(false);//禁止按钮 } }); activityMonitor=new Timer(100,new ActionListener(){//每0.5秒执行一次 public void actionPerformed(ActionEvent e){//以下动作将在事件调度线程中运行，十分安全 int current=activity.getCurrent();//得到线程的当前进度 jpb.setValue(current);//更新进度栏的值 if(current==activity.getTarget()){//如果到达目标值 activityMonitor.stop();//终止定时器 chashamuma.setEnabled(true);//激活按钮 } } }); dengluzhuangtai = new JLabel(new ImageIcon("zaixianzhuangtai.jpg")); dengluzhuangtai.setBounds(75, 145, 35, 30); this.add(dengluzhuangtai); dengluzhuangtai.addMouseListener(this); denglu = new JButton("登录"); denglu.setBounds(140, 155, 80, 20); this.add(denglu); this.setAlwaysOnTop(true); zidongdenglu = new JCheckBox("自动登录"); zidongdenglu.setBounds(200, 190, 100, 30); this.add(zidongdenglu); jizhumima = new JCheckBox("记住密码"); jizhumima.setBounds(100, 190, 100, 30); // jizhumima.setBackground(new Color(228, 244, 255)); this.add(jizhumima); haoma = new JPopupMenu(); /* zhanghao = new JTextField(20); zhanghao.setBounds(120, 78, 135, 20); zhanghao.setBorder(BorderFactory.createMatteBorder(1, 1, 1, 1, Color.WHITE)); zhanghao.setFont(new Font("宋体",Font.PLAIN,13)); this.add(zhanghao);*/ // zhanghaowb = new JLabel(new ImageIcon("2.png")); // zhanghaowb.setBounds(90, 73, 194, 31); // jiantou = new JLabel(new ImageIcon("baijiantou.png")); // jiantou.setBounds(256, 78, 23, 21); // jiantou.addMouseListener(this); // this.add(jiantou); // this.add(zhanghaowb); chashamuma.addActionListener(this); mima = new JPasswordField(); mima.setEchoChar('*'); mima.setFont(new Font("宋体",Font.PLAIN,13)); mima.setBounds(100, 113, 150, 20); this.add(mima); zhanghao = new JComboBox(); zhanghao.setEditable(true); zhanghao.setBounds(100, 78, 150, 20); zhanghao.setFont(new Font("宋体",Font.PLAIN,13)); this.add(zhanghao); guanggao = new JLabel(new ImageIcon("guanggao.gif")); guanggao.setBounds(0, 0, 334, 64); beijing = new JLabel(new ImageIcon("beijing.jpg")); beijing.setBounds(0, 64, 334, 154); wenzi = new JLabel(new ImageIcon("wenzi.jpg")); wenzi.setBounds(30, 75, 50, 100); denglu.addActionListener(this); // zhanghaowb.addMouseListener(this); // zhanghao.addMouseListener(this); this.add(wenzi); this.add(beijing); this.setLayout(null); this.add(guanggao); this.setVisible(true); this.setDefaultCloseOperation(3); this.setSize(340, 250); this.setLocationRelativeTo(null); } public static void main(String[] args) { /*JFrame.setDefaultLookAndFeelDecorated(true); try { UIManager.setLookAndFeel(new SubstanceOfficeBlue2007LookAndFeel()) ; UIManager.setLookAndFeel("org.jvnet.substance.skin.SubstanceOfficeBlue2007LookAndFeel"); } catch (Exception e) { System.out.println("Substance Raven Graphite failed to initialize"); } SwingUtilities.invokeLater(new Runnable() { public void run() { QQLogin w = new QQLogin(); w.setVisible(true); } });*/ new QQLogin(); } public void mouseClicked(MouseEvent e) { // TODO 自动生成方法存根 } public void mouseEntered(MouseEvent e) { if(e.getSource() == dengluzhuangtai) { dengluzhuangtai.setIcon(new ImageIcon("zaixianzhuangtaidian.jpg")); } } public void mouseExited(MouseEvent e) { if(e.getSource() == dengluzhuangtai) { dengluzhuangtai.setIcon(new ImageIcon("zaixianzhuangtai.jpg")); } } public void mousePressed(MouseEvent e) { // TODO 自动生成方法存根 } public void mouseReleased(MouseEvent e) { // TODO 自动生成方法存根 } public void mouseDragged(MouseEvent e) { // TODO 自动生成方法存根 } public void mouseMoved(MouseEvent e) { // TODO 自动生成方法存根 } public class liaotianchuangkou { } class SimThread extends Thread{//线程类 private int current;//进度栏的当前值 private int target;//进度栏的最大值 public SimThread(int t){ current=0; target=t; } public int getTarget(){ return target; } public int getCurrent(){ return current; } public void run(){//线程体 try{ while (currenttarget !interrupted()){//如果进度栏的当前值小于目标值并且线程没有被中断 sleep(10); current++; if(current == 700) { sleep(3000); } else if(current == 730) { sleep(1000); } } }catch (InterruptedException e){} } } public void actionPerformed(ActionEvent e) { if(e.getSource() == chashamuma) { this.setBounds(300, 300, 340, 300); } else if(e.getSource() == denglu) { String zh = (String) zhanghao.getSelectedItem(); System.out.println(zhanghao.getSelectedItem()); // System.out.println(zhanghao.getItemAt(0)); char [] str = mima.getPassword(); String mima = String.valueOf(str) System.out.println(mima); // Sql login = new Sql(); // if(login.login(zh,mima)) // { try { s = new Socket("127.0.0.1",8888); System.out.println(s); PrintWriter pw; Scanner sc; pw = new PrintWriter(s.getOutputStream(),true); sc = new Scanner(s.getInputStream()); String str2 = "login#289872400198724#"+zh+"#289872400198724#"+mima; System.out.println(str2); pw.println(str2); String str3 = sc.nextLine(); String yanzheng[] = str3.split("#"); System.out.println(str3); if(yanzheng[0].equals("true")) { System.out.println("登陆成功!"); name = yanzheng[1]; qq = yanzheng[2]; // this.setVisible(false); // Thread.sleep(5000); System.out.println("woao"+name); System.out.println("woai"+qq); Logined logined = new Logined(name,qq); this.setVisible(false); } else { JOptionPane.showMessageDialog(this, "用户名或密码错误!", "用户名或密码错误!", 0); } } catch (UnknownHostException e2) { // TODO 自动生成 catch 块 e2.printStackTrace(); } catch (IOException e2) { // TODO 自动生成 catch 块 e2.printStackTrace(); } /*try { login.rs = login.stat.executeQuery("select * from qquser where username='"+zh+"' and password = '"+mima+"'"); boolean flag = login.rs.next(); if(flag == true) { name = login.rs.getString("name"); qq = login.rs.getString("username"); } else { }*/ // } catch (SQLException e1) { // TODO 自动生成 catch 块 // e1.printStackTrace(); // } } else { JOptionPane.showMessageDialog(this, "用户名或密码错误", "输入错误", 0); } // this.setVisible(false); //new Logined(); } }